This product seems to be more about sending a file to another FAX machine that accepts files, presumably so you didn't have to own a MODEM. They got this wrong. In the days when FAX was used for things like sending purchase orders, what was needed was a means of putting a file on a floppy, walking to the FAX machine, then sending off a 'PDF' from there, removing the need to print out the form first. Faxes were still…
For regulatory compliance reasons these systems are still in place in large banks, insurance firms, and law firms.